@babel/plugin-proposal-optional-chaining
Advanced tools
Transform optional chaining operators into a series of nil checks
The @babel/plugin-proposal-optional-chaining package is a Babel plugin that allows developers to use the optional chaining syntax in JavaScript. Optional chaining enables developers to read the value of a property located deep within a chain of connected objects without having to check that each reference in the chain is valid.
Optional Property Access
Safely access a property on an object. If 'obj' is null or undefined, 'value' will be undefined instead of throwing an error.
const value = obj?.prop;Optional Method Calls
Safely call a method on an object. If 'obj' or 'obj.method' is null or undefined, 'result' will be undefined instead of throwing an error.
const result = obj?.method?.();Optional Element Access
Safely access an array element. If 'arr' is null or undefined, 'item' will be undefined instead of throwing an error.
const item = arr?.[index];This package allows safe property access on objects but does not use the optional chaining syntax. It's a utility function rather than a Babel plugin and requires manual function calls.
Lodash provides a 'get' function that allows safe access to object properties. It's similar in purpose to optional chaining but uses a different syntax and is a part of the larger Lodash utility library.
Transform optional chaining operators into a series of nil checks
See our website @babel/plugin-proposal-optional-chaining for more information.
Using npm:
npm install --save-dev @babel/plugin-proposal-optional-chaining
or using yarn:
yarn add @babel/plugin-proposal-optional-chaining --dev
v7.21.0 (2023-02-20)
babel-core, babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties, babel-plugin-proposal-private-methods, babel-plugin-proposal-private-property-in-object
babel-helper-create-regexp-features-plugin, babel-plugin-proposal-regexp-modifiers, babel-standalone
babel-cli, babel-core, babel-generator, babel-plugin-transform-destructuring, babel-plugin-transform-modules-commonjs, babel-plugin-transform-react-jsx, babel-traverse
babel-parser, babel-types
const modifier in type parameters (@nicolo-ribaudo)babel-generator, babel-helpers, babel-parser, babel-plugin-proposal-decorators, babel-plugin-syntax-decorators, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
2023-01 TC39 meeting (@nicolo-ribaudo)babel-parser
new.target outside functions (@overlookmotel)annexb: false parser option to disable Annex B (@nicolo-ribaudo)babel-core
.cts as configuration file (@liuxingbaoyu)babel-generator, babel-parser, babel-plugin-transform-typescript
export type * from (@nicolo-ribaudo)babel-plugin-transform-typescript
babel-core
babel-helper-create-class-features-plugin, babel-plugin-proposal-class-properties, babel-plugin-proposal-class-static-block, babel-plugin-proposal-private-methods, babel-plugin-transform-classes, babel-plugin-transform-new-target
babel-parser, babel-plugin-transform-flow-comments, babel-plugin-transform-flow-strip-types, babel-types
babel-core
@babel/core (@nicolo-ribaudo)babel-plugin-transform-typescript
FAQs
Transform optional chaining operators into a series of nil checks
The npm package @babel/plugin-proposal-optional-chaining receives a total of 9,472,035 weekly downloads. As such, @babel/plugin-proposal-optional-chaining popularity was classified as popular.
We found that @babel/plugin-proposal-optional-chaining demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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